Automobile radiator core



June 30, 1931. N. T. CORCORAN AUTOMOBILE RADIATOR CORE Filed July 11, 1929 2 Sheets-Sheet 1 M/Jon 7. Coma/"an dummy 1 A 1 A r v 1 I June 30, 1931.

N. T. CORCORAN AUTOMOBILE RADIATOR CORE Filed July 11, 1929 2 Sheets-Sheet 2 Q@@2@@ glg Patented June 30, 1931 c TED STATES PATENT OFFICE NELSON T. CORCORAN, OF CINCINNATI, OHIO, ASSIGNOR TO THE CORCORAN MANU- FACTURING GOMPANY, OF NORWOOD, OHIO, A CORPORATION OF OHIO AUTOMOBILE RADIATOR CORE Application filed July 11,

This invention relates to an automobile radiator core and has for an object the provision ofmeans within the core whereby increased forced air circulation is had and whereby additional heat radiating surfaces are combined therewith.

Another object -is to .provide a relatively simple strip forinsertion within the elements of whioh thecoreis constructed so that the auxiliary forced air 'circulation portions are disposed in'each of the air passages'of the core.

Another object is to provide a radiator core wherein each of the water passages istparallel throughoutdts course with the other water passages.

Another object is-to provide-with a core of this type "a combined heat radiating and forced air circulation strip which effects 'a balanced symmetrical cellular effect in the appearance of the core.

These and otherobjects are attained by the 'means describedherein and disclosed in the accompanying drawings in which:

Fig. 1 is a rfr agmental front elevational view of a section of an automobile radiator core of the invention.

Fig. 2 is a view taken on line 22 of Fig. 1.

Fig. 3 is a View taken on line 33 of Fig. 1.

Fig. 4 is a View taken on line 4t fi of Fig. 1.

Fig. 5 is an isometric view of the water passage forming strip of the invention.

Fig. 6 is an isometric view of the heat radiation and forced air circulation strip of the invention.

The radiator core shown in Fig. 1 is formed of a series of pieces of strip metal 9 as shown in Fig. 5 each arranged in an endless band by any suitable means such as by lock seaming as shown at 10 (see Figs. 1 and 2). A series of transversely extending corrugations are formed in the strip 9, the corrugations may be of any suitable contour, a substantially half hexagonal form being used in the present embodiment. The corrugations extend alternately from opposite sides of the strips and, in the completed band the various faces resulting from such corrugations are disposed in spaced parallel pairs. An exterior face 1929. Serial No. 377,456.

of the strip 9 is represented in Fig. 3 and the faces 11 lie in the same plane, while faces 12 disposed intermediate the faces 11 are all in a plane below the'plane of faces 11. Inclined faces 13 connect faces 11 and 12. The usual longitudinal outstanding flanges 14 are provided so that when the outer faces of two adjacent bands of the strip material 9 are brought into abutment and have their edges soldered together by the usual dipping operation-the waterpassages 15 will'be formedbetween them. Each of the faces 12'has boss 16 which extends into the water passage .15 formed by a pair of saidstrips. The forming of the boss results in an external depression 18 in the outer face of the resulting water tube. The water tubes are herein indicated generally by reference character 19. Thus itwill be noted that the water tubesin front edge elevation in the core (see Fig. '1) each form a series of half hexagons-extending in opposite directions. The intermediate strips 20 are of single'thickncss metal corrugated to the same general form as the tube forming strips. Each of the strips 20 has similar portions v21 connected by inclined portions 22 and disposed in staggered relation solthat the portions 21 may abut the exterior faces 12 of adjacent water tubes.

The relation of the parts in the front elevation in Fig. 1 is such that the strips 20 having the inclined portions 22 thereof complete the general hexagonal cellular effect. The faces 21 have bosses 23 formed at intervals transversely and across. The'endmost of these bosses 23 are in actual abutment with the outer faces 12 of the tube walls while the intermediate boss 23 enters the recess 18 at the'center. The recess 18 it will be noted is somewhat elongated while the boss 23 is substantially circular. This results in the formation of a tunnel or air pocket. It should'be noted that the central boss 23 is slightly higher than the endmost bosses. The intermediate portions 24 of facesr2l are perforated in part and the metal is struck outwardly to form vanes 25 which project into the substantially hexagonal transverse air passages in the finished core. It should be noted that in a. given pair of these vanes the inclination is in opposite directions, but both extend from the same side of a given face 21. Thus as indicated by the arrows at the left hand side of Fig. 4, air entering the radiator at one side will pass into each of the hexagonal air passages and, that portion which strikes the vane 25 will be directed into may escape into one of the hexagonal spaces above'or below through the vertical air passage 26. The value of thls Wlll be readily appreciated by those thoroughly familiar with radiation and conduction of heat since taken is herein used.

the well known principle of having the cold est air possible rub as rapidly as possible over those surfaces from which heat is to be The strip 20 presents edges 27 closely adjacent being spaced from the edges 28 of the water tubes so thatkeach of the vertical portions of the front and rear faces of the radiator presents these double heat radiating edges.

The usual dipping or soldering of the water tubes also effects a soldering of the outermost bosses 23 tothe faces 12 of the water tubes. This construction imparts great rigidity against crushing to thefinished core but'nevertheless permits of a desirable resiliency in the water tubes individually.

The strip 20 will hereinafter be referred to asspacer strip because, in addition to per forming its previously described functions,

it also plays an essential part in the construction of the elements of which the coreis formed.

In constructlng radiators 1n accordance with the present invention, an endless band of the formed material 9 is reduced to a somewhat flattened condition whereupon a single spacer strip 20 is positioned inside the flattened band of material 9. The corrugations of the band and spacer strip are such that the parts assume substantially the position shown in Figs. 1 and 4. Thereafter, to build a core of a given size a number of these bands with spacer strips loosely inserted and positioned in side by side relation so that the older faces of the bands form theinner walls of given resulting water tubes. Upon dipping or soldering the group of elements, the tubes are sealed at the edges and the spacer strips 20are simultaneously soldered to the outer faces of such tubes at the bosses 28.

This construction facilitates the assembly of radiator cores. 7

I cla1m: a 1. In an automobile radiator core the combination of a plurality of flat endless bands having transversely extendingridges and secured together in side by side relation to provide watertubes, alternateridges in each strip having a depression therein, spacer strips disposed one within eachjof said bands, bosses on the strlps extending lnto depressions 1n the bands and vane members struck from opposite sides of the spacer strip.

2. An automobile radiator core comprising a plurality of flattened endless corrugated bands the opposed walls of said bands cooperating with the walls of adjacent bands for forming water tubes the outer walls of said tubes having depressions therein and a spacer strip insertedwithin each band and having bosses cooperating with the depres sions in the outer walls of a pair of adjacent resulting water tubes and providing transverse air passages. V

3. As a new article of manufacture a ra diator core comprising a series of parallel water tubes having depressions in the walls thereof, a spacer strip between said tubes, bosses on the spacer strip extending into the depressions in the tube walls, said sp acer'strip forming-together with the tube walls trans-- verse and vertical air passages and means comprising vanes struck from the body of the spacer strip in horizontal alignment with the bosses for creating deflected air movement through said air passages.

"I. In a radiator core the combination with a water tube having a depression therein a' spacer strip adjacent the tube and having a boss extending into the depression in the water tube, the spacer strip having perforations adjacent said boss, and vanes on the strip for conducting moving air into and from the space within said depression in the 

